Your blood can hold a record of past illnesses. That information can reveal how many people have had a certain infection – like 58% of Americans having had COVID-19 by the end of February 2022.
Research suggests that too-frequent immunizations may lead to a phenomenon called “immune exhaustion.”
Medications to treat COVID-19 are in no way a substitute for the vaccine. But under the right circumstances, some show great promise for helping patients.
An FDA panel has voted against recommending approval of a booster COVID-19 shot for the general population – disappointing some public health officials.
Although there is no evidence yet that it affects COVID-19 vaccines, schistosomiasis, a neglected tropical disease, has been associated with lower vaccine immunity for several vaccines.
A COVID-19 vaccine does not cause infertility – but it can protect you from the dangerous complications of contracting the virus.
COVID-19 vaccination produces a more consistent immune response than a past infection. With the delta variant, the difference in protection may be even greater.
Various companies use different ingredients and different delivery systems in their COVID-19 vaccines. Researchers are investigating whether it’s better for individuals to mix what’s available.
Most shots work best when inserted into muscle. The shoulder muscle known as the deltoid works best.
The survival of the human body is a fine balancing act between cell growth and cell death. Understanding our cells’ complex “licence to die” could give us new ways to combat disease.
Many people never experience the least bit of discomfort from the COVID-19 vaccines, but mild side effects are common. They include swelling in the affected arm, nausea and chills.
If you’ve already had the coronavirus and recovered, you might be tempted to give the vaccine a pass. A scientist explains why the shot offers the best protection against future infection.
People who have had COVID will still benefit from having a COVID vaccine. Here’s why.
An immunologist explains that you get some protection from the first dose of the mRNA vaccines but you need two to build up strong immunity, particularly to newer coronavirus variants.
The coronavirus pandemic has driven a lot of scientific progress in the past year. But just as some of the social changes are likely here to stay, so are some medical innovations.
SARS-CoV-2 is much like a zombie virus. It interferes with normal sickness behavior and blocks pain, turning its victims into unsick spreaders of the virus.
The microbes in your gut influence how your immune system reacts to bacteria and viruses. A severe immune reaction is deadly; a small one lets the virus win. The right balance may depend on your diet.
Healing is a complicated process. As people age, higher rates of disease and the fact that old cells lose the ability to divide slow this process down.
Many people object to the added ingredients in vaccines. But pharmacists explain why those fears are unwarranted.
Any COVID-19 vaccine is likely to be given first to higher risk groups before it is given to children. But we still need vaccines that are safe and effective for them too.